Insulator structure



Oct. 29, 1940.

Filed Aug 16, 1938 Patented Oct. 29, 1940 INSULATOR STRUCTURE vLory B. Stewart, Falconer,. N. Y.; Marian Marguerite Stewart executors of estate of and William F. Stewart, Lory B. Stewart, deceased,

assignors of onebird to Karl'L. Thielscher,

Application August 16, 1938, Serial No. 225,238

Claims.

This invention relates to an insulator structure and to one which is especially adapted for use as a three-way insulator bracket on buildings for telephone or other wiring, and it aims generally to provide an improved, inexpensive, eflicient and durable construction enabling attachment of the wiring for anchoring, guiding or dead ending, and

; article constructed which is unitary for use where a plurality of insulators or insulating brackets, usually specifically different in construction, are now necessary in a like situation.

The invention further has for objects, to provide an article or structure of the present character which is interlinked with the wiring so as or the equivalent enabling attachment of the article at any desired angle, even to brick or stone buildings, according to the disposition of the coacting wiring.

Various additional objects and advantages will become apparent from a consideration of the description following, taken in connection with the accompanying drawing illustrating operative embodiments.

In said drawing:

Figure 1 is a view in elevation of an insulator in accordance with the invention;

Figure 2 is an end view of the article of Figure 1; v

Figure 3 is a side elevation of the article of Figure 1;

Figure 4 is a view in longitudinal section, through a slightly modified form of an insulator article and structure to which it is attached;

preferably having a flat surface 12 for direct engagement with the attaching structure, which may be a brick, stone, or the like, as at l3. In addition to base ll, said body III has parallel spools I4 and a spool disposed at a right angle thereto, the spools being connected by integral webs l6. Such base and spools produce a central opening l1 therebetween through which telephone or otherelectric wiring is passed, and which is anchored to or guided by the spools, being engaged specifically in grooves l8 thereof intervening ribs Hi. It will be noted that adjacent ribs I9 of the spools l4 and 15 are integrally connected in right angular relation, as shown in Figure 2, to afford maximum reinforcement.

Embedded in the body In in parallelism to the surface I 2 is a plate 20, of brass, or any other suitable metal. Also, embedded in the body l0 and jointly with said plate "are one or more arch shaped elements 2|, of brass, or any other suitable metal.

Said elements 2| are shown in Figures 1 to 3, and are preferably in the form of wires and employed in pluralities, joined, if desired, at their apices by tie wires 22. At their terminals, elements 2| pass through openings 23 adjacent corners of the plate 20. The connection in the openings 23 is separable or detachable initially, so that upon fracture or in the absence of the body Ill, the telephone or other wires will be retained thereby. To this end, the terminals of the wires 2| are coiled, as at 24, to the remainder of the wires.

Attached to the plate at an opening 25 therein, accessible through a bore 26 in the body [0 extending from surface 12 to the opening I1, is an attaching screw 21. Such screw has a screw threaded portion 28 passing through opening 25 and secured detachably but rigidly to the plate 20 by nuts 29 on opposite sides thereof. The bore 26 affords clearance for the application of special wrenches or tools to apply the said nuts 29. After the nuts 29 are applied and the screw or detachable member 21 thus secured in place, said bore is preferably filled with a cementitious material or other insulating compound 30.

The free or distal end 3| of screw 21 may be finished as a lag screw or in any other preferred manner, according to the material of the building element l3 or the like to which it is adapted to be fastened. Element I 3 may specifically be a brick, stone, or the like, having a hole 32 drilled therein and containing a dowel shield structure 33 (Fig. 4) therein to facilitate anchorage of the screw at any desired angle or position. It will also be realized, that the hole 32 may be prog aerate? provided in a concrete or like wall.

Figures 4 and 5 specifically show .the use of a single metallic tie or arch element which functions like that at 26, and which is here designated 2i'. Element 2B is more in the nature of a band and has books 36 at itsterminals detachably engaging slots or openings 23' longer than those at 23. The connection of the hooks 34 with the plate, here designated 26', is separable or detachable in the absence of the insulating body l0, since the hooks 34 detachably engage openings 23'. Element 2! thus functions similarly to the elements 2!. V

In Figure 6, a further modified form is shown wherein the body "3' is constructed approximately like that at Ill. Embedded therein is a metallic plate 20" functioning like that at 20 and 20' and having metallic elements 2!" like those at H and 2|. In this instance, in lieu of a detachable screw, or fastening element, a fastening element 35 is formed integrally in the plate 26" and is shown specifically in the form of a screw engaged with a board 3E of a wooden building,

orthe eq ivalent;

In the use of the invention, in all of its forms, the telephone wires, or the equivalent, pass through an opening I? and they are connected,

guided, anchored to, or dead end connected in any of the grooves l8, and the body of the insulator may be arranged at any desired angle and the wires wound around the grooves of one or more of the spools, as conditions warrant. Should the insulating material of the body fracture or break away, the telephone or other wires will be held against displacement by the metallic elements 2i, 2! or M", which may later be detached at their junction with the plates 2B, 215' or 20"; incidental to the replacement of the insulator or insulator bracket.

It will be realized that the metallic parts 26 and 2!, 20" and ii, and 2B" and 2i' function dually in that they greatly reinforce the body or insulation, and, also, retain the telephone or other wires, should the insulating body fracture.-

Various changes may he resorted to, provided they fall within the spirit and scope of the invention, as described by the appended claims.

What is claimed is:

1. 'An insulator structure 0! the class described.

having a bodyof insulation for engagement by wiring and having an opening through which the wiring passes,said body having an attaching surface marginally thereof and a bore extending from said opening to said surface, a plate disposed across said bore, a device embedded in the body in mechanical union with and extending from opposite end portions oisaid plate and jointly therewith surrounding said opening, said plate continuously around its margin being embedded in said body,- 's aid plate and device serving to reinforce the body and functioning to retain the wiring should the body fracture, and attaching means at said bore extending from the plate.

2. An insulator. structure of the class described having a body of insulation for engagement by wiring and having an opening through which the wiring passes, said body having an attaching surface marginally thereof and a bore extending from said opening to said surface, a plate disposed across said bore, a device embedded in the body. in mechanical union with and extending from opposite end portions of said plate and jointly therewith surrounding said opening, said plate continuously around its margin being embedded in said body, said plate and device serving to reinforce the body and functioning to retain the wiring should the body fracture, attach ing means at said bore extending through an opening in said plate, fastenings for the attaching means on opposite sides of said plate in said bore, said bore initially providing clearance to enable application of said fastenings to said attaching means.

3. An insulator structure according to claim 1 having disaligned spools about said opening, said spools having ribs and intervening wire-engag- 

